use std::process::Command;
fn main() {
  // note: add error checking yourself.
  let output = Command::new("git")
    .args(["rev-parse", "HEAD"])
    .output()
    .unwrap();
  let git_hash = String::from_utf8(output.stdout).unwrap();
  println!("cargo:rustc-env=GIT_HASH={git_hash}");
}
